Ralph's Blog

How a Java server application can authenticate with a Google service account and call a Google API

In this blog post, we're going to build Java applications that download, import, and search the "Have I Been Pwned?"

Build a simple polling application with Spring Boot, Vite, JavaScript, and server-sent events, and update the results live in an ECharts pie chart.

Writing human-readable regular expressions with the VerbalExpressions library

How to consume Server-Sent Events in a Java application.

A practical introduction to TTL indexes in MongoDB and how to use them from Java

A practical overview of capped collections in MongoDB and how to use them from Java

This blog post shows how to use Dexie in a TypeScript application

In this blog post, I give you an overview of Dexie, a minimalistic wrapper library for IndexedDB.

Explore the methods of the Cache API, which is primarily used in Service Workers to cache assets but can also serve as a general-purpose cache.

This blog post shows how to send browser push messages from a Spring Boot application with Firebase Cloud Messaging.

A closer look at the date-fns date/time library.

How to use custom SVG icons in a current Ionic application

In this blog post I present two different ways to integrate speech recognition functionality into an Ionic app: the Web Speech API and RecordRTC together with the Google Cloud Speech API.

In this blog post we create an Ionic app that dynamically requests location data points from a Spring Boot server and displays them on an OpenStreetMap map.

Creating a trivial password manager with the Web Cryptography API and the Ionic framework.

In this blog, we create REST services in Spring Boot and consume them in an Ionic app.

How to use pluggable file systems in Java and a look at implementations outside the standard library

How to create a simple MultiValueMap with Java 8

Example of an Ionic web application that stores data in IndexedDB and works offline.

IndexedDB, the browser's built-in database.

What are Server-Sent Events and how can you send them from a Spring Boot application

In this post, we look at a way to display charts from the ECharts library in an Ionic app

How to implement a JWT authentication system with Ionic/Angular and Spring Boot.

Form validation in an Ionic Angular application with Angular Signal Forms and Spring Boot.

How to create RSS and Atom feeds with the Spring Framework and the ROME library

An introduction to the localStorage API for client-side persistence in web applications

Compare Protocol Buffers and JSON by consuming messages from a Spring Boot server in an Ionic application.

An introduction to Protocol Buffers, a binary data format developed by Google, and how to use it with Spring Integration